提出利用碰撞调谐质量阻尼器(Pounding Tuned Mass Damper,PTMD)控制近海单桩风力涡轮机塔身在风浪联合作用下的结构振动。为此,利用拉格朗日方程推导风浪联合作用下风机与PTMD的耦合动力方程并据此分析了相关控制效果。具体而言,结构...提出利用碰撞调谐质量阻尼器(Pounding Tuned Mass Damper,PTMD)控制近海单桩风力涡轮机塔身在风浪联合作用下的结构振动。为此,利用拉格朗日方程推导风浪联合作用下风机与PTMD的耦合动力方程并据此分析了相关控制效果。具体而言,结构模型方面,以美国国家可再生能源实验室(NREL)的5 MW基准单桩海上风力涡轮机为研究对象,利用非线性黏弹性模型描述阻尼装置的碰撞过程,并在塔体模型中考虑基础土壤效应。风浪外荷载方面,采用考虑普朗特叶尖损失因子(Prandtl’s Tip Loss Factor)和格劳厄特校正(Glauert Correction)的叶素动量法计算风湍流作用在叶片上的气动荷载,并利用Morison方程计算满足JONSWAP谱的随机波浪荷载。研究发现,碰撞调谐质量阻尼器对塔顶响应的控制效果较好;引入的碰撞机制使调谐质量阻尼器鲁棒性提高,使之在参数失调的情况下仍能保持较好的振动控制效果。展开更多
The seismic safety of offshore wind turbines is an important issue that needs to be solved urgently.Based on a unified computing framework,this paper develops a set of seawater-seabed-wind turbine zoning coupling anal...The seismic safety of offshore wind turbines is an important issue that needs to be solved urgently.Based on a unified computing framework,this paper develops a set of seawater-seabed-wind turbine zoning coupling analysis methods.A 5 MW wind turbine and a site analysis model are established,and a seismic wave is selected to analyze the changes in the seismic response of offshore monopile wind turbines under the change of seawater depth,seabed wave velocity and seismic wave incidence angle.The analysis results show that when the seawater increases to a certain depth,the seismic response of the wind turbine increases.The shear wave velocity of the seabed affects the bending moment and displacement at the bottom of the tower.When the angle of incidence increases,the vertical displacement and the acceleration of the top of the tower increase in varying degrees.展开更多
文摘提出利用碰撞调谐质量阻尼器(Pounding Tuned Mass Damper,PTMD)控制近海单桩风力涡轮机塔身在风浪联合作用下的结构振动。为此,利用拉格朗日方程推导风浪联合作用下风机与PTMD的耦合动力方程并据此分析了相关控制效果。具体而言,结构模型方面,以美国国家可再生能源实验室(NREL)的5 MW基准单桩海上风力涡轮机为研究对象,利用非线性黏弹性模型描述阻尼装置的碰撞过程,并在塔体模型中考虑基础土壤效应。风浪外荷载方面,采用考虑普朗特叶尖损失因子(Prandtl’s Tip Loss Factor)和格劳厄特校正(Glauert Correction)的叶素动量法计算风湍流作用在叶片上的气动荷载,并利用Morison方程计算满足JONSWAP谱的随机波浪荷载。研究发现,碰撞调谐质量阻尼器对塔顶响应的控制效果较好;引入的碰撞机制使调谐质量阻尼器鲁棒性提高,使之在参数失调的情况下仍能保持较好的振动控制效果。
基金supported in part by the National Natural Science Foundation of China(Nos.51978337,U2039209).
文摘The seismic safety of offshore wind turbines is an important issue that needs to be solved urgently.Based on a unified computing framework,this paper develops a set of seawater-seabed-wind turbine zoning coupling analysis methods.A 5 MW wind turbine and a site analysis model are established,and a seismic wave is selected to analyze the changes in the seismic response of offshore monopile wind turbines under the change of seawater depth,seabed wave velocity and seismic wave incidence angle.The analysis results show that when the seawater increases to a certain depth,the seismic response of the wind turbine increases.The shear wave velocity of the seabed affects the bending moment and displacement at the bottom of the tower.When the angle of incidence increases,the vertical displacement and the acceleration of the top of the tower increase in varying degrees.
